The intestine is like the TARDIS of organs: its surface area is bigger on the inside. Countless villi protrude inward from the intestinal lining, facilitating the absorption of nutrients during the digestive process. Photographer Satu Paavonsalo teamed up with Sinem Karaman, a vascular biologist at the University of Helsinki, to photograph the immense network of blood vessels responsible for this digestive function. Using confocal microscopy, the image features a 10X view of the submucosa (purple) and villi (blue gradient) from mouse intestines. The image took 3rd place at the 2022 Nikon Small World Photomicrography Competition.
Lisa Winter became social media editor for The Scientist in 2017. In addition to her duties on social media platforms, she also pens obituaries for the website. She graduated from Arizona State University, where she studied genetics, cell, and developmental biology.
View full profile.
Learn about our editorial policies.